How To Fix RSD_TREX528 - Parameter 'NUMPROC' = '&1' - No. of processes for aRFC parallelization

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 528

• Message text: Parameter 'NUMPROC' = '&1' - No. of processes for aRFC parallelization

Description
Number of processes for parallel processing using aRFC dialog processes
during indexing.
Repair
You can only change the parameter values on the <ZK>BW Accelerator
Monitor </>(TA RSDDBIAMON) screen (menu <ZK>BW Accelerator</> -> <ZK>
Index Information</> -> <ZK>Change Global Parameters</>).

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX528 - Parameter 'NUMPROC' = '&1' - No. of processes for aRFC parallelization ?

  The SAP error message RSD_TREX528 indicates an issue related to the number of processes for asynchronous Remote Function Call (aRFC) parallelization in the context of SAP BW (Business Warehouse) or SAP HANA. The parameter NUMPROC specifies the number of processes that can be used for parallel processing, and the error suggests that the value set for this parameter is not valid or is causing issues.
  Cause:
  
  Invalid Configuration: The value of the NUMPROC parameter may be set to an invalid number (e.g., negative value, zero, or excessively high).
  System Resource Limitations: The system may not have enough resources (CPU, memory) to handle the specified number of processes.
  SAP Kernel or Software Bugs: There may be bugs in the SAP kernel or related software components that affect the handling of parallel processes.
  Network Issues: If the system is trying to communicate with remote systems, network issues could also lead to this error.
  
  Solution:
  
  
  Check and Adjust NUMPROC Parameter:
  
  Go to the transaction code RSCUSTV10 (or RSCUSTV20 for BW) to check the settings for the NUMPROC parameter.
  Ensure that the value is set to a reasonable number based on your system's capabilities. A common practice is to set it to a value that is less than or equal to the number of available CPU cores.
  
  
  
  Monitor System Resources:
  
  Use transaction codes like SM50 or SM66 to monitor the current processes and resource usage.
  Ensure that the system has enough CPU and memory resources available to handle the specified number of parallel processes.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Update SAP Kernel:
  
  If the issue persists, consider updating the SAP kernel and related components to the latest version, as this may resolve any underlying bugs.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  RSCUSTV10 / RSCUSTV20: For checking and adjusting BW settings.
  SM50 / SM66: For monitoring active processes.
  SM21: For checking system logs.
  SLG1: For checking application logs.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on aRFC and parallel processing configurations.
  
  
  By following these steps, you should be able to diagnose and resolve the RSD_TREX528 error related to the NUMPROC parameter.